polyvinylenes

https://doi.org/10.1351/goldbook.08905
Polymers composed of macromolecules containing exclusively ethene-1,2-diyl (formerly vinylene) or substituted ethene-1,2-diyl constitutional repeating units in the backbone: −CRA1=CRA2− where RA1 and RA2 are each hydrogen or an alkyl, aryl, or heteroaryl group (structure-based polymer class name).
Notes:
  1. Delocalization of electrons in conjugated chains gives to main-chain single bonds a partial character of double bonds, which restrict free rotations around these bonds which, therefore, show the cis-trans like isomerism. Four basic stereoregular polyvinylene chains can be derived:
  2. Polyvinylenes are almost exclusively prepared by polymerization of acetylene derivatives. Therefore, based on the source, they are mostly polyacetylenes.
Example:
Polyvinylenes and their structure-based (first row) and source-based (second raw) names are:
Source:
PAC, 2022, 94, 15. (Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)) on page 63 [Terms] [Paper]
Citation: 'polyvinylenes' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08905 RIS BibTex EndNote
Div. IVTextXMLJSON